main.cpp

易学c++源码

#include "iostream.h"
enum day{Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday};
void nextday(day &D);
void display(day D);
void main()
{
	day today=Sunday;
	for (int i=0;i<7;i++)
	{
		cout <<"Data in today=" <<today <<endl;
		display(today);
		nextday(today);
	}
}
void nextday(day &D)
{
	switch(D)
	{
	case Sunday:
		D=Monday;
		break;
	case Monday:
		D=Tuesday;
		break;
	case Tuesday:
		D=Wednesday;
		break;
	case Wednesday:
		D=Thursday;
		break;
	case Thursday:
		D=Friday;
		break;
	case Friday:
		D=Saturday;
		break;
	case Saturday:
		D=Sunday;
		break;
	}
}
void display(day D)
{
	switch(D)
	{
	case Sunday:
		cout <<"Sunday" <<endl;
		break;
	case Monday:
		cout <<"Monday" <<endl;
		break;
	case Tuesday:
		cout <<"Tuesday" <<endl;
		break;
	case Wednesday:
		cout <<"Wednesday" <<endl;
		break;
	case Thursday:
		cout <<"Thursday" <<endl;
		break;
	case Friday:
		cout <<"Friday" <<endl;
		break;
	case Saturday:
		cout <<"Saturday" <<endl;
		break;
	}
}